Description

2-(Chlorosulfonyl)-3-Methoxybenzoic Acid Methyl Ester is a versatile and reactive organic intermediate characterized by its chlorosulfonyl and ester functional groups. This compound is valued for its role as a key building block in the synthesis of more complex molecules, particularly in fine chemical and pharmaceutical manufacturing. It is primarily sought by R&D chemists and process development teams in the agrochemical, pharmaceutical, and specialty chemical industries for constructing sulfonamide derivatives and other active ingredients.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, especially those containing sulfonamide moieties with potential biological activity.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides where the chlorosulfonyl group enables further derivatization.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex benzoic acid derivatives and in heterocyclic chemistry.
• Material Science Research: Investigated as a monomer or modifying agent for creating specialized polymers with unique properties.
• Dye and Pigment Intermediate: Serves as a starting material for synthesizing certain sulfonated colorants and functional dyes.

Basic Information

Product Name	2-(Chlorosulfonyl)-3-Methoxybenzoic Acid Methyl Ester
CAS No.	215648-56-9
Molecular Formula	C9H9ClO5S
Molecular Weight	264.68 g/mol
Synonyms	Methyl 2-(Chlorosulfonyl)-3-methoxybenzoate; 3-Methoxy-2-(chlorosulfonyl)benzoic Acid Methyl Ester; Benzoic acid, 2-(chlorosulfonyl)-3-methoxy-, methyl ester; Methyl 3-methoxy-2-sulfonylchloridebenzoate
EINECS	Contact for details

Quality Control

Our production of 2-(Chlorosulfonyl)-3-Methoxybenzoic Acid Methyl Ester adheres to stringent internal quality standards to ensure batch-to-batch consistency and reliability. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.